public void ExpressionExtensions_GetNameTest()
{
TestClass c = new TestClass();
Assert.AreEqual("TestProperty", ExpressionMethods.GetName((() => c.TestProperty)),
"GetName returned the incorrect name of the property in the selector method");
}
public void RepositoryOwner_Repository_Query()
{
var expression = new Query()
.RepositoryOwner("foo")
.Repository("bar")
.Select((Repository x) => new
{
x.Id,
x.Name,
Owner = x.Owner.Select(o => new
{
o.Login
}),
x.IsFork,
x.IsPrivate,
});
Expression <Func <JObject, IEnumerable <object> > > expected = data =>
ExpressionMethods.SelectEntity(
data["data"]["repositoryOwner"]["repository"],
x => new
{
Id = x["id"].ToObject <string>(),
Name = x["name"].ToObject <string>(),
Owner = ExpressionMethods.SelectEntity(x["owner"], o => new { Login = o["login"].ToObject <string>() }),
IsFork = x["isFork"].ToObject <string>(),
IsPrivate = x["isPrivate"].ToObject <string>(),
});
var query = new QueryBuilder().Build(expression);
Assert.Equal(expected.ToString(), query.Expression.ToString());
}
public void Union()
{
var expression = new RootQuery()
.Union
.Select(x => x.Simple)
.Select(x => new
{
x.Name,
x.Description,
});
Expression <Func <JObject, object> > expected = data =>
ExpressionMethods.Select(
((Func <JToken, IQueryable <JToken> >)(x => ExpressionMethods.ChildrenOfType(x, "Simple")))((data["data"]["union"])),
x => new
{
Name = x["name"].ToObject <string>(),
Description = x["description"].ToObject <string>(),
});
// We need to remove the (Func<JToken, IQueryable<JToken>>) cast that is needed by
// C# but not by expression trees.
expected = (Expression <Func <JObject, object> >)RemoveConvert.Default.Visit(expected);
var query = new QueryBuilder().Build(expression);
Assert.Equal(expected.ToString(), query.Expression.ToString());
}
public void AutoMapperTestCaseThatFails()
{
var expressionMethods = new ExpressionMethods();
// Doesn't work with many
expressionMethods.GetById(1, x => x.Info, x => x.Profile);
}
public void AutoMapperTestCaseThatWorks()
{
var expressionMethods = new ExpressionMethods();
// Works with one
expressionMethods.GetById(1, x => x.Info);
}
private bool EvaluateChildren(State state)
{
if (Time == state.CurrentTime)
{
return(ExpressionMethods.CheckExpressionSatisfaction(Expression, state.Fluents) == FluentValue.True);
}
return(state.Children.All(EvaluateChildren));
}
public void Data_Select_Single_Member()
{
var expression = new RootQuery()
.Data
.Select(x => x.Id);
Expression <Func <JObject, IEnumerable <string> > > expected = data =>
ExpressionMethods.SelectEntity(data["data"]["data"], x => x["id"].ToObject <string>());
var query = new QueryBuilder().Build(expression);
Assert.Equal(expected.ToString(), query.Expression.ToString());
}
public void Search_User_Name_Via_Edges()
{
var expression = new Query()
.Search("foo", SearchType.User, 30)
.Edges.Select(x => x.Node)
.Select(x => x.User.Name);
Expression <Func <JObject, IEnumerable <object> > > expected = data =>
ExpressionMethods.Select(
ExpressionMethods.ChildrenOfType(data["data"]["search"]["edges"], "User"),
x => x["name"].ToObject <string>());
var query = new QueryBuilder().Build(expression);
Assert.Equal(expected.ToString(), query.Expression.ToString());
}
public void SimpleQuery_Select_Multiple_Members()
{
var expression = new RootQuery()
.Simple("foo", 2)
.Select(x => new { x.Name, x.Description });
Expression <Func <JObject, object> > expected = data =>
ExpressionMethods.SelectEntity(data["data"]["simple"], x => new
{
Name = x["name"].ToObject <string>(),
Description = x["description"].ToObject <string>(),
});
var query = new QueryBuilder().Build(expression);
Assert.Equal(expected.ToString(), query.Expression.ToString());
}
public void Nested_Selects()
{
var expression = new RootQuery()
.Data
.Select(x => new
{
x.Id,
Items = x.Items.Select(i => i.Name),
});
Expression <Func <JObject, object> > expected = data =>
ExpressionMethods.SelectEntity(
data["data"]["data"],
x => new
{
Id = x["id"].ToObject <string>(),
Items = ExpressionMethods.SelectEntity(x["items"], i => i["name"].ToObject <string>())
});
var query = new QueryBuilder().Build(expression);
Assert.Equal(expected.ToString(), query.Expression.ToString());
}
/// <summary>
/// Gets the command associated with the given property and delegates.
/// <b>For use outside of property setters and getters</b>
/// </summary>
/// <param name="execute">Action to be performed by the command. Recieves the command parameter as an argument</param>
/// <param name="canExecute">Predicate that is used to determine if the command can be executed</param>
/// <param name="selector">The expression that selects the appropriate property</param>
/// <returns>The command composed of the supplied delegates</returns>
protected ICommand GetCommand <T>(Action <object> execute, Predicate <object> canExecute, Expression <Func <T> > selector)
{
return(this.GetCommand(execute, canExecute, ExpressionMethods.GetName(selector)));
}
/// <summary>
/// Gets the command associated with the given property and delegates.
/// <b>For use outside of property setters and getters</b>
/// </summary>
/// <param name="execute">Action to be performed by the command. Recieves the command parameter as an argument</param>
/// <param name="canExecute">Func that is used to determine if the command can be executed</param>
/// <param name="selector">The expression that selects the appropriate property</param>
/// <returns>The command composed of the supplied delegates</returns>
protected ICommand GetCommand <T>(Action <object> execute, Func <bool> canExecute, Expression <Func <T> > selector)
{
return(this.GetCommand(execute, (x => canExecute()), ExpressionMethods.GetName(selector)));
}
/// <summary>
/// Gets the command associated with the given property and delegate.
/// <b>For use outside of property setters and getters</b>
/// </summary>
/// <param name="execute">Action to be performed by the command</param>
/// <param name="selector">The expression that selects the appropriate property</param>
/// <returns>The command composed of the supplied delegate</returns>
protected ICommand GetCommand <T>(Action execute, Expression <Func <T> > selector)
{
return(this.GetCommand((x => execute()), (x => true), ExpressionMethods.GetName(selector)));
}
